Plate frame



FIG. 1 is a front elevation view of a plate frame showing the new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a left side elevation view thereof; and,

FIG. 7 is an operational perspective view thereof with additional disclaimed environment.

The broken lines depict environmental subject matter that forms no part of the claimed design. 

CLAIM The ornamental design for a plate frame, as shown and described. 